咪芯型號/Model：SM-57

阻抗/ Lmpedance: 30 Ω (±30%)

指向性/Polar pattem:  UNI-DIRECTIONAL/心形

頻率響應/Frequency: 50Hz-16KHz

靈敏度/Sensitivity:-52dB(±3dB)(1dB=1mv/Paat 1KHz)